Steam-actuated valve.



No. 655,537. Patented Aug. 7, |900. W. A. WODESN.

STEAM ACTUATED VALVE.

(Application filed Dec. 7, 1899.)

No. 655,537. Patented-Aug. 7, |900.

w. A. woonEsuN.

STEAM ACTUATED VALVE.

I (Application led Dec. 7, 1899.)

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NrTEn STATES PATENT Grrrcn.

IVILLIAM ARMSTRONG VODESON, OF GATESIIEAD, ENGLAND.

STEAM -ACTUATED VALVE.

SPECIFICATION forming part of Letters Patent No. 655,537, dated August 7, 1900.

Application led December 7, 1899. Serial No. 739,466. (No model.)

liner 3 and is connected by a passage 16 (in To all whom it may concern:

Be it known that I, WILLIAM ARMSTRONG VOODESON, a subject of the Queen of Great Britain and Ireland, residing at Gateshead, in the county of Durham, England, have invented Improvements in Steam Actuated Valves, of which the following is a specification.

This invention relates to means for distributing actuating iiuid in engines or motorse. g., those of direct-acting steam-pumps-of the kind in which the slide-valve thatcontrols the admission and the exhaust of 4the motor-cylinder is moved, so as suddenly to open and close the admission and exhaust ports to their full extent, its actuation being effected by the live steam itself under theV control of an auxiliary slide-valve operated by a suitable moving part, as the cross-head of the piston-rod. The invention has for its object to simplify, and consequently cheapen, the construction of apparatus of this kind.

The accompanying drawings represent, by Way of example, the motor of a direct-acting steam-pump provided with steam-distributing apparatus according tothis invention.

Figures 1 and 2 show the motor-cylinder and the valve-chest as seen from opposite sides of a vertical central sectional plane. Figs. 3, 4, and show the same in section on the lines III, IV, and V, respectively, of Figs. 1, 2, 6, and S as seen from above. Figs. 6 and 7 show the liner respectively in vertical central section and in plan; and Fig. 8 is a development of the periphery of the liner, the plane of division being indicated at VIII in Fig. 7.

According to this invention the main slidevalve 1 and the auxiliary slide-valve 2 are accommodated in a single liner 3, which is of suitable material, as cast-iron, and is provided with a transverse partition 4 to form two chambers 5 and G for the valves 1 and 2, respectively. The main valve 1 is of the piston type, being provided with four rings 7, 8, 9, and 10, (integral or not with the body of the valve,) that it the liner 3, and between which there are threev portions of smaller diameter that form chambers 11, 12, and 13, of which, when the piston 14 of the motor is in its highest position, (shown in Figs. 1 and 2,) the highest chamber 11 forms a communication between a port 15, which is in the the liner or in the valve-chest 17, or partly in each, as shown) with the steam-inlet 13 ofthe valve-chest and a port 19 in the liner 3, connected by a passage 2O with the upper end of the cylinder 21, while the middle chamber 12 forms a communication between an exhaustport 22, which is in the liner and is in permanent connection with the exhaust-passage 23 of the valve-chest, and a port 24, connected by a passage`25 with the lower end of the cylinder 21. The ports and passages in the liner are most clearly shown in Figs. 6 and 8. At the same time the upper and lower ends of the cylinder are prevented from communicating with the exhaust-passage 23 and the steam-inlet 18, respectively, by the rings 8 and 9 of the valve 1. When, on the contrary, the piston 14 is at the lower end of the cylinder 21, the valve 1 is in such a position that the upper end of the cylinder is in full commu-nication with the exhaust passage 23 through the passage 26 and the ports 27 and 22, while the lower end of the cylinder is in full communication with the steam-inlet 13 through a passage 28 and two ports 29 and 30, of which the latter, 30, is in permanentv connect-ion with the steam-inlet 18 through the passage 16. In orderto balance the main valve 1, passages 31 3233 34 (forming almost complete rings) are formed in the wall of the liner as continuations of the ports 19, 27, 24, and 29, respectively, so as to surround the rings 8 and 9 of the Valve 1 when these rings are opposite to the corresponding ports. The auxiliary valve 2 is also of the piston type and is provided with two rings 35 and 35a, between which a portion of smaller diameter forms a chamber 35h, which is in permanent communication through a'port 35Canda passage 16a, both in the liner, with the passage V IOO liner, the upper end (above the valve 2) of the chamber G, a port 42 and a passage 43, both in the liner, and the port 22. Vhen the valve 1 is at the upper end of its stroke, itis kept in position by steam reaching the lower end of its chamber 5 from the chamber35b of the valve 2 through a port 44, a passage 45, and a port 46, all in the liner, steam from the upper end of the chamber 5 of the valve 1 having during the upstroke of the valve 1 been expelled to the exhaust-passage 23 through a port 47, a passage 48, a port 49, the lower end of the chamber 6, a port 50, and a passage 51, leading to the passage 43, all these ports and passages being in the wall of the liner. The positions of the ports 39 and 47 in the chamber 5 are such as to cause the main valve 1 to be cushioned at the ends of its strokes. The operation of the auxiliary valve 2 is effected by the cross-head of the pump-rod 53, which strikes at the ends of its up and down strokes, respectively, against tappe/ts 54 and 55, fixed on a rod 56, which is connected by a lever 57, pivoted at 58 to a bracket 59, secured to one of the covers 60 of the valvechest 1,7. Vhen the valve 2 is moved by the cross-head from one to the other ot its extreme positions, it immediately causes live steam to pass from its chamber 351 to the proper end of the chamber 5 and places the other end of that chamber into communication with the exhaust-passage 23, so as to effect a sudden movement of the main valve, such as to put the two ends of the motor-cylinder quickly into full communication with the steam-inlet 18 and the exhaust-passage 23, respectively. Through the other cover 61 of the valve-chest 17 projects a spindle 62, which is fixed to the main valve 1 and is provided with a handle 63. This device has the twofold object of indicating the movements of the main valve when the pump is in operation and of enabling the main valve to be worked up and down by hand for awhile When the pump has been stopped forsome time, so as to make sure of the freedom of the valve in its chamber and to get rid of any slight impediment that there may be.

It will be obvious that although the invention has been described in its application to an engine or motor whose piston has an upand-down movement the direction of motion of the piston in relation to the vertical is immaterial to the application of the invention.

What I claim, and desire to secure by Letters Patent, is

1. Means for distributing and controlling the actuating iiuid in engines or motors comprising a main valve and an auxiliary valve placed in line with each other and Working Vwithin a liner having ports through its walls and passages formed in its outer Walls Yconnecting the ports with thersteam-inlet, exhaust-outlet and with the motor-cylinder, as set forth.

2. Means for distributing and controlling the actuating fluid in engines or motors com` prising a main valve and au auxiliary valve placed in line with each other and working within a liner divided into two chambers by a partition-plate, as set forth.

3. Means for distributing and controlling the actuating fluid in engines or motors comprising a main valve and an auxiliary valve placed in line with each other and wo-rking in two valve-chambers contained within the same liner having ports through its walls and passages formed in its outer walls connecting the ports with the steamfinlet, exhaust-outlet and with the motor-cylinder and the two valvefchambers together substantially as described.

4. Means for distributing and controlling the actuating iiuid in engines or motors comprising a main valve and an auxiliary valve placed in line with each other and working in a liner divided into two valve-chambers by a partition-plate and ports and pasSagQS gflfmed in the wali of the liner connecting the steam inlet and exhaust passages with the motorcylinder and the two valve-chambers substantially as described.

Y5. Means for distributing and controlling the actuating fluid in engines or motors coniprising two valve-chambers in line with each other and contained within the saine liner, a main distributing-valve in one of said chambers, an auxiliary distributing-valve in the other of said chambers, and adapted to operate the said main distributing-valve by controlling the passage of actuating fluid thereto, and means for moving said auxiliary slide- I i valve to and fro, as set forth.

6. Means for distributing and controlling Ithe actuating fluid in engines or motors cemprising a main valve and an auxiliary valve placed in line with each other, and working in two valve-chambers contained within the same liner, ports and passages formed in the wall of the nner connecting the steam inlet and exhaust passages with the motor-cylinder and the two valve-chambers, and means for operating said auxiliary valve to and f ro to control said ports and passages, substantially as described.

7. Means for distributing and controlling the actuating fluid in engines or motors coinprising two valve-chambers in line with each other and contained within the saine liner, ports and passages formed in the Wall of the liner connecting the steam inlet and exhaust passages with the motor-cylinder, and the two valvechambers together, an exhaust-port near each end of the main distributing valvechamber and adapted to cause the Valve iO be cushioned at the end of its strokes as set forth.

8. Means for controlling the passage ef ac,- tuating fluid to or from an engine or motor cylinder 21 comprising two valve-chambers 5, 6 in line with each other and contained within the same liner 3 a main slide-valve 1, an auxiliary slide-valve 2, an inlet 18 for actuating fluid, an exhaust-outlet 23, passages IOO IIO

, formed in thevwall of the liner 3 and adapted ends of the chamber. 5 into communication to put the ends of said cylinder 21 into full respectively with the inlet 18, and the eX- communication respectively with the said inhaust-outlet 23 for the purpose of moving the let 1S and with the said exhaust-outlet 23 said main slide-Valve 1 quickly from one of 15 5 through the chamber 5 containing the said its eXtreme positions to the other.

main valve when the said valve is in one of Signed at Gateshead, England, this 15th its end positions, means for moving the said day of November, 1899.

auxiliary valve 2 to and fro, and passages WILLIAM ARMSTRONG WOODESON. formed in the wall of the liner for connecting Witnesses: 1o the chamber 6 with the inlet 18, the exhaust- ROBERT SCOPE,

out-let 23, and the chamber 5, so as to put the i JAMES L. THOMPSON. 

